熟悉ArrayList

最新推荐文章于 2024-03-16 16:14:22 发布

JAVAkuroro

最新推荐文章于 2024-03-16 16:14:22 发布

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分类专栏： java SE 文章标签： string list application object kill class

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/**
 * @(#)Setlist.java
 *
 * Setlist application
 *
 * @author kuroro
 * @version 1.00 2011/9/10
 */
import java.util.ArrayList;
public class Setlist {
    
    public static void main(String[] args) {
    	
    	ArrayList list = new ArrayList();
    	list.add("aaaa");
    	list.add("NBA");
    	list.add("CBA");
    	list.add("diablo");
    	list.add(1,"bill");
    	list.add("kill");
    	System.out.println(list);
        System.out.println(list.getClass());
    	System.out.println(list.contains("CBA"));
    	System.out.println(list.contains("WNBA"));
        String s =(String) list.get(3);
    	System.out.println(s);
    	System.out.println(s.getClass());
    	System.out.println(list.get(4));
    	System.out.println(list.hashCode());
    	System.out.println(list.isEmpty());
    	System.out.println(list.size());
    	list.trimToSize();
    	System.out.println(list.size());
    	list.remove(4);
    	list.remove("bill");
    	System.out.println(list);
        Object[] a=list.toArray();
        for(int i=0;i<a.length;i++)
       	System.out.println((String)a[i]);

    }
}

结果